import java.io.*;
import java.util.Scanner;

//进行普通文件的复制
public class IODemo2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入源文件");
        String srcPath = scanner.next();

        System.out.println("请输入目标文件");
        String detPath = scanner.next();

        File srcFile = new File(srcPath);
        if (!srcFile.isFile()){
            System.out.println("路径有误");
            return;
        }
        File detFile = new File(detPath);
        if (!detFile.getParentFile().isDirectory()) {
            System.out.println("路径有误");
            return;
        }
        try(InputStream inputStream = new FileInputStream(srcFile);
            OutputStream outputStream = new FileOutputStream(detFile)) {
            while (true){
                byte[] buffer = new byte[1024];
                int n = inputStream.read(buffer);
                if (n == -1) {
                    break;
                }
                outputStream.write(buffer,0,n);
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}
